4531644523 has 8 divisors (see below), whose sum is σ = 5318996192. Its totient is φ = 3779286336.

The previous prime is 4531644493. The next prime is 4531644577. The reversal of 4531644523 is 3254461354.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-4531644523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4531641523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8748090 + ... + 8748607.

It is an arithmetic number, because the mean of its divisors is an integer number (664874524).

Almost surely, 2^4531644523 is an apocalyptic number.

4531644523 is a deficient number, since it is larger than the sum of its proper divisors (787351669).

4531644523 is a wasteful number, since it uses less digits than its factorization.

4531644523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17496741.

The product of its digits is 172800, while the sum is 37.

The square root of 4531644523 is about 67317.4904686739. The cubic root of 4531644523 is about 1654.8245111675.

The spelling of 4531644523 in words is "four billion, five hundred thirty-one million, six hundred forty-four thousand, five hundred twenty-three".